Release Notes

Changes in CSIT-2001

  1. DPDK PERFORMANCE TESTS

    • Intel Xeon 2n-skx, 3n-skx testbeds: Testpmd and L3fwd performance test data is not included in this report version. This is due to the lower performance and behaviour inconsistency of these systems following the upgrade of processor microcode packages (skx ucode 0x2000064) as part of updating Ubuntu 18.04 LTS kernel version. Tested VPP and DPDK applications (L3fwd) are affected. Skx test data will be added in subsequent maintenance report version(s) once the issue is resolved. See Known Issues.

    • Intel Xeon 2n-clx testbeds: DPDK performance test data is now included in this report, after resolving the issue of lower performance and behaviour inconsistency of these systems due to the Linux kernel driven upgrade of processor microcode packages to 0x500002c. The resolution is to use latest SuperMicro BIOS 3.2 (for X11DPG-QT motherboards used) that upgrades processor microcode to 0x500002c, AND NOT kernel provided ucode package as it does put THE system into sub-optimal state.

  2. DPDK RELEASE VERSION CHANGE

    • CSIT-2001 tested DPDK-19.08, as used by VPP-20.01 release.

  3. TEST ENVIRONMENT

    • TRex Fortville NIC Performance: Received FVL fix from Intel resolving TRex low throughput issue. TRex per FVL NIC throughput increased from ~27 Mpps to the nominal ~37 Mpps. For detail see CSIT-1503 and TRex-519].

    • New Intel Xeon Cascadelake Testbeds: Added performance tests for 2-Node-Cascadelake (2n-clx) testbeds with x710, xxv710 and cx556a-edat NIC cards.

Known Issues

List of known issues in CSIT-2001 for DPDK performance tests:

#

JiraID

Issue Description

1

CSIT-1675

Intel Xeon 2n-skx, 3n-skx and 2n-clx testbeds behaviour and performance became inconsistent following the upgrade to the latest Ubuntu 18.04 LTS kernel version (4.15.0-72-generic) and associated microcode packages (skx ucode 0x2000064, clx ucode 0x500002c). VPP as well as DPDK L3fwd tests are affected.